Piece of ordnance more particularly adapted for firing upon aircraft



Feb. 12, 1929. 1,702,167

N. E. METHLIN PIECE OF ORDNANCE MORE PARTICULARLY ADAPTED FOR FIRING UPON AIRCRAFT Filed Oct. 15, 1927 s Sheets-Sheet 1 Feb. 12,1929. 1,702,167

N. E- METHLIN PIECE OF ORDNANCE MORE PARTICULARLY ADAPTED FOR FIRING UPON AIRCRAFT Filed Oct. 15, 1927 s Sheets-Sheet 2 Feb. 12, 1929. 1,702,167

N. E. METHLIN PIECE OF ORDNANCE MORE PARTICULARLY ADAPTED FOR FIRING UPON AIRCRAFT Filed 001:. 15, 1927 3 Sheets-Sheet 5 ii '-i u {i. ll ii'? 1! iiil| u D? ..;;;;;;;i D3 E D? I,

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' rasnte 1 1929 a meters EMILIEN METHLIN, or; minis. I 9 33. .5. EBAN A FIlYlI J 1 o The, present invention has for its subject I a particularembodiment of the anti-aircraft .-gun.forming-the subject of U. S. patent apl1 plication filed on 2nd December, 1925 (.72,743) and U; S. PatentNo. 1,658,005.

' This embodiment is illustrated in longitudinal elevation witha part i'n'section in Fig. "Land in. pla nview in Fig. 2, the gun being lshown in these two figures in the position it occupies for transport.

*Fig. 3 is a seetionalelevation along the line 5 3+3 in'Fig.-1.- T v i The gun comprises a cradle B journalled [at its rear end 6 in bearings (Z, (Z carried, by av I support D movable about a pivot, the oscillating massbeing wholly supported on ac-- count of the connection of the cradle, at a pointnear the ce'ntre of gravity of the said mass,- to a spring-counterbalancing device ,IK, journalled in such a way that for any angleof inclination of the mass balance is obtained in practice.

l -"As in the formsv described in the above I named p'atent, the platform D, supporting ,lthe oscillating mass is constructedin the QfOrmof a top carriage adapted to turn 'ina saddle D itself movable by means of a ball "joint in a pedestal-D According. to the present invention this f'pedestal iscarried in the frame of a tractor V i or other vehicle, the ball joint for the saddle being disposedin the frame in such a way that the centre of gun'which is carried upon the tractor. is located, duringtransport, near the vertical line said tracton. r In the example shown in the drawing the tractor comprises a frame E mounted at the front end upon "a set of wheelsF. which may be steering wheels, and at the rear end 'uponfendl es's chains or caterpillar tracks G, .steerin g andjdriving' for example, of any 1 "known type. 1 t

i t For transportth e oscillating mass is 'ures, thecra dle'being provided with a memfrom the vehicle,

apron r f latter for example, upon the may comprise a T-shaped gravity of the whole of the.

"passing, through the centre of gravity of the,

{brought into, the position shown in the figbar for hooking it upon or disengaging itv groove 7; in which engages a beak '6 of cor maize? Brannon, Ass GNo t mQsormntnnn sci-n, omr-smogxcoagrnmr ceram cs. i 1

- Application filed October 15,1927, Serial No. 226,354, and in France-May 11, 1927..

permits firing to be carried out with a gun barrel recoiling entirely above the frame of of the gun thus constructed time or'onnivsn'on Moan PARTICULARLY 'ADAPTED non FIRING. UroN Armani.

the vehicle, the trunnions of the oscillating mass being however, at a small height above the ground. The change overlfrom the firing position tothe transporting position is eii'ectedwith'the greatest ease with no other operation than that ofghooking the cradle upon the vehicle, and if'desired taking the weight of the oscillating mass by raising the strut, I, which is normally. lowered. The constant balance of the gun by. the spring counterbalancing device which supports the oscillating mass p gun during firing to be ensured without the use of heavy additional supports. Provision may naturally be made, as shown in the drawings, of light auxiliary supports of known type, such as those shown at J in the drawings.

Claims: 7 j v p 1. The combination of. a tractor and a frame carried thereby, mounted in said frame, a sa joint connection with sai carriage adapted to turn ddle having a ball dpedestal," a top in said saddle, a

coil in said cradle,

counter-balance to gravity of the mass turning about the cradle bearings, said ball oint, and pedestal being located in said frame so as to place the center of gravity of the whole gun approximately in a vertical line passing through the center of gravity of the tractor.

2. The combination of a caterpillar tractor and a frame carried thereby, with a pedestal mounted in said frame midway between the caterpillar treads and in a vertical transverse plane passing through said treads where they contact .with the ground, a saddle having a ball joint connection with saidpedestal, a top carriage adapted to turn in saidsaddle,"a cradle having bearings in said sadi with a pedestal cradle having bearings'in said saddle about which it oscillates, a gun mounted for re a spring counter-balance onsaid top carriage, connections from said ermit s the stability of the mass turning about the "cradle bearings, a center ofgravity of the Whole gun beingapclle about \VhlCh-lt oscillates, a gun mounted for recoil in'saicl cradle a spring counterbalanced on said top carriage, connections from said, counter-balanoe to s'aicl cradle at approximately the center of gravity of the the v proximately 1n a vertical line passing through v r the center of gravity of the tractor.

and bearings,

In testimony spec1ficat10n'.

Whereof have signed this 51 moms Emmmmflm, 

